Exterior Painting Cost: Siding, Prep, and Access
Published
Exterior painting is priced on two jobs that get quoted as one. There is the coating pass, which this estimator models at 0.025 hours per square foot and $55 per hour, and there is the prep pass ahead of it, which is what actually separates a modest bid from one several times larger on the same house. On intact stucco the prep is a wash and a day of caulk. On eighty-year-old lap siding that is failing, prep can cost more than every gallon of paint on the job. Everything below is about telling those two situations apart before you sign anything.
| Quality tier | Materials | Labor | Consumables | Total | Per sq ft |
|---|---|---|---|---|---|
| Budget | $360 | $1,100(20 hrs) | $96 | $1,712 | $2 |
| Mid-range | $680 | $1,100(20 hrs) | $96 | $2,064 | $3 |
| Premium | $1,320 | $1,100(20 hrs) | $96 | $2,768 | $3 |
Figures are generated by this site's estimator using a labor rate of $55/hour and 0.025 hours per sq ft. They are planning baselines, not quotes, and will vary with your region, site conditions and contractor.
What exterior painting costs and what surface it is priced on
Painted area is wall area, never floor area. On an exterior that means the vertical face of the siding: measure the perimeter of the house at ground level, multiply by the height to the eaves, then add the gable triangles at each end (half the base times the height). Doors and large windows come out; everything else stays in as waste allowance.
That number is usually bigger than people expect: a 1,400 square foot single-story house commonly carries well over 1,000 square feet of siding once gables are counted, and a two-story house roughly doubles it.
The rate this tool applies, 0.025 hours per square foot, is a coating rate: it covers getting paint on a sound, prepared surface. It does not include washing, scraping, sanding, spot-priming, or caulking, and on exteriors that omission is the whole story.
- Siding area = perimeter x height to the eaves
- Add each gable = 0.5 x base x height
- Trim, soffits, fascia, shutters, and railings are their own line, not folded into siding area
The 800 sq ft sample is a partial elevation, not a house. Measure your actual siding area before comparing any total on this page to a real bid.
Prep is the line that outgrows the paint bill
You can turn this into arithmetic instead of an argument. At the $55 per hour labor rate this estimator uses, basic-tier paint for the 800 square foot sample costs $360, which buys about six and a half labor hours. Any prep beyond that costs more than every gallon of basic paint on the job.
The same math at the other tiers: mid-range paint at $680 is about 12 labor hours, and premium at $1,320 is about 24 labor hours, which is more than the entire 20-hour coating allowance the tool models for 800 square feet.
Because the estimator applies one flat labor rate, its total is closer to a best case for exteriors than an average one. Get prep quoted as its own line, and carry contingency above the 10 percent default on anything older than about forty years.
- Pressure or soft wash to remove dirt, chalk, and mildew, then full dry time
- Scrape and sand every failing edge back to a sound, feathered surface
- Spot-prime bare wood, rusted nail heads, and any exposed substrate
- Replace rotted trim, sills, or siding boards before coating, which is carpentry, not painting
Ask each bidder how many hours they have allowed for prep and what happens if the siding needs more. A bidder who has not counted prep hours has not priced your house.
What drives exterior painting cost up or down
Substrate condition is first, and it is mostly invisible from the curb. Chalky, brittle, or alligatored paint means a full scrape. Sound siding with one previous coat means a wash and go.
Access is second, and it is where two-story homes separate from single-story ones. Once ladders, ladder jacks, or pump-jack staging come out, every setup and move is time charged against the same square footage, and the coating rate in the model no longer holds.
Detail count is third. A plain gable wall paints fast. Shutters, corbels, railings, multi-lite windows, and two-tone trim are brushwork, which is slower per foot than a sprayed or rolled field.
Season and location matter too. Labor rates and paint prices move a lot between regions, so every figure here is a planning baseline rather than a quote.
- Number of stories, plus slopes, decks, or plantings that block ladder footing
- Trim, soffit, fascia, shutter, and railing count, all of them brushwork
- Color change, especially light over dark, which can force a primer plus two finish coats
How siding type changes the job
Wood is the substrate that scrapes, which makes it the usual source of a shock bid. Fiber cement and vinyl are the cheapest to repaint, because the prep is a wash.
Brick deserves its own warning. Painting it is close to permanent, because the coating is hard to remove without damaging the face, and a film that traps moisture in a masonry wall can accelerate spalling. Treat painting bare brick as a one-way decision and get product-specific advice first.
| Siding | Prep burden | Coating notes | What raises the price |
|---|---|---|---|
| Wood lap or shingle | Highest: scrape, sand, feather, spot-prime | Primer on all bare wood, two finish coats | Peeling, rot, and pre-1978 lead paint |
| Stucco | Moderate: wash, patch cracks, seal | Elastomeric or masonry-rated coating, high absorption | Crack repair and heavy material draw on rough texture |
| Fiber cement | Low: wash, caulk joints, spot-prime cut ends | Factory-primed board takes standard acrylic well | Caulk joint count and any factory warranty still in force |
| Brick or block | Moderate: wash, repoint, prime for masonry | Breathable masonry coating, effectively irreversible | Repointing, efflorescence treatment, sheer absorption |
| Vinyl | Low: wash, verify adhesion | Vinyl-safe formulation only, no darker than the original | Dark colors that risk warping the panels |
Weather windows, cure time, and how long the finish lasts
Exterior painting is the one trade with a schedule constraint nobody controls. Coatings state a minimum air and surface temperature and a dew point rule on the label, and products differ, so the label governs rather than any rule of thumb.
Surfaces also have to be dry. After a wash or a rain, siding needs time to give up moisture, and wood needs longer than fiber cement. Painting over trapped moisture is the fastest way to buy a peeling job.
Longevity is governed by exposure and substrate, not by a single number. South and west elevations take the most sun and fail first, sills and railing caps fail before vertical siding, and shaded walls hold mildew instead. The only firm figure available is the manufacturer warranty term on the product being applied, so ask which line is going on your house and get that term in writing.
Do not let a crew coat siding that is still damp or push past the label temperature to finish before a cold snap. A job painted outside its window can fail within a season.
Pre-1978 lead paint on exteriors
This is the real regulatory issue in exterior painting, and it matters more outside than in. Housing built before 1978 in the United States may contain lead-based paint, and exteriors are exactly the surfaces that get scraped, sanded, and power-washed.
Chips and dust from an uncontained scrape land in the soil around the house and where children play. Disturbing lead-based paint during renovation, repair, and painting is federally regulated, and contractors doing that work on pre-1978 housing are required to be certified and to follow lead-safe practices.
If your home predates 1978 and the job involves more than a light scuff of an intact modern topcoat, have the coating tested and hire a firm certified for lead-safe work. Do not dry-sand, power-sand without containment, open-flame strip, or pressure-wash suspect surfaces yourself.
Testing, containment, and waste disposal rules vary by state and municipality. Confirm what applies where you live before anyone touches the siding.
Assume pre-1978 exterior paint is lead-bearing until a test says otherwise. Ground containment is not optional, and requirements differ by jurisdiction.
Exterior painting: DIY or hire a pro
No permit is normally required to repaint an exterior and no licensed trade is involved, so the question is genuinely open on a single-story house with sound siding. What you save is the labor line, $1,100 of the 800 square foot sample at the rate this tool uses. You still buy the paint and the $96 of consumables, and on an exterior that list grows: masking film, drop cloths, exterior caulk, primer, and a sprayer rental or a lot of brush time.
Height is where the honest answer changes. A second story means extension ladders on uneven ground, ladder jacks, or rented staging, and falls are the actual risk in this trade, not a bad cut line. If the wall cannot be reached safely from a properly footed ladder you can move alone, hire it out.
Prep volume is the other limit. Twenty hours for 800 square feet is a coating pace for someone who does this daily, and a full scrape-and-prime cycle on top of it means several weekends that all depend on the weather.
Good DIY candidates: a single-story ranch, sound fiber cement or vinyl siding, a repaint in a similar color, and a dry stretch on the forecast. Hire it out for two-story elevations, heavy scraping, brick or stucco coatings, anything pre-1978 that needs disturbing, or a deadline you cannot move.
Frequently asked questions
- How much does it cost to paint the exterior of a house?
- Using the rates behind this estimator, coating work runs roughly $1.95 to $3.15 per square foot of siding once paint, consumables, and labor are combined. The important step is measuring the actual siding area, which is the perimeter times the wall height plus the gables, not the floor area of the house. Prep on an older exterior is charged on top of that coating rate, and costs vary by region, so treat these as planning baselines rather than quotes.
- Why is exterior painting more expensive than interior painting?
- The coating itself is priced almost the same per square foot, but exteriors carry a prep pass that interiors usually do not. Washing, scraping, sanding, spot-priming, and caulking add hours that no flat per-square-foot rate includes. At the $55 per hour rate this tool uses, roughly six and a half hours of prep already costs more than an entire basic-tier paint order for an 800 square foot wall.
- Do I have to pressure wash before painting the exterior?
- The surface has to be clean, and washing is the normal way to get there, but pressure is not always the right tool. High pressure can drive water behind siding, gouge soft wood, and on pre-1978 housing it can spread lead-contaminated chips into the soil. A soft wash with a cleaning solution is often the better choice. Whatever the method, the siding must be fully dry before any coating goes on.
- When is the best time of year to paint a house exterior?
- Any stretch that stays inside the coating label minimum air and surface temperature, above the dew point, and dry enough for the siding to be dry when it is coated. Products differ, so the label governs rather than a fixed rule. In most climates that means a dry mid-season window, which is also when painters book up fastest, so schedule early rather than accepting a rushed late-season start.
- Can you paint brick or stucco, and does it cost more?
- Both can be painted, but they need masonry-rated or breathable coatings rather than standard siding paint, and their rough, absorbent surfaces draw noticeably more material per square foot than smooth siding. Painting brick is close to permanent, since removing the coating later risks damaging the brick face, and a film that traps moisture in the wall can accelerate spalling. Get product-specific advice before painting bare brick.
- How often does an exterior need to be repainted?
- There is no single interval, because exposure and substrate govern it. South and west elevations take the most sun and typically fail first, horizontal surfaces such as sills and railing caps fail before vertical siding, and shaded walls tend to grow mildew rather than chalk. The one firm number available is the manufacturer warranty term on the product being applied, so ask which product line is going on the house and get that term in writing.
- Do I need a permit to paint the outside of my house?
- A straightforward repaint does not normally require a building permit and is not licensed trade work. Two things can still apply: homes built before 1978 may contain lead-based paint, and disturbing it during exterior prep is federally regulated and should be done by a certified firm using lead-safe practices. Separately, historic districts and homeowner associations often restrict exterior colors, so check those before buying paint.